x=int(input())

if(x>=400 and x<=599):
    print('8')
elif(x>=600 and x<=799):
    print('7')
elif(x>=800 and x<=999):
    print('6')
elif(x>=1000 and x<=1199):
    print('5')
elif(x>=1200 and x<=1399):
    print('4')
elif(x>=1400 and x<=1599):
    print('3')
elif(x>=1600 and x<=1799):
    print('2')
elif(x>=1800 and x<=1999):
    print('1') x=int(input()) x int(input()) int input() input if(x>=400 and x<=599):
    print('8')
elif(x>=600 and x<=799):
    print('7')
elif(x>=800 and x<=999):
    print('6')
elif(x>=1000 and x<=1199):
    print('5')
elif(x>=1200 and x<=1399):
    print('4')
elif(x>=1400 and x<=1599):
    print('3')
elif(x>=1600 and x<=1799):
    print('2')
elif(x>=1800 and x<=1999):
    print('1') x>=400 and x<=599 x>=400 x 400 x<=599 x 599 print('8') print '8' elif(x>=600 and x<=799):
    print('7') x>=600 and x<=799 x>=600 x 600 x<=799 x 799 print('7') print '7' elif(x>=800 and x<=999):
    print('6') x>=800 and x<=999 x>=800 x 800 x<=999 x 999 print('6') print '6' elif(x>=1000 and x<=1199):
    print('5') x>=1000 and x<=1199 x>=1000 x 1000 x<=1199 x 1199 print('5') print '5' elif(x>=1200 and x<=1399):
    print('4') x>=1200 and x<=1399 x>=1200 x 1200 x<=1399 x 1399 print('4') print '4' elif(x>=1400 and x<=1599):
    print('3') x>=1400 and x<=1599 x>=1400 x 1400 x<=1599 x 1599 print('3') print '3' elif(x>=1600 and x<=1799):
    print('2') x>=1600 and x<=1799 x>=1600 x 1600 x<=1799 x 1799 print('2') print '2' elif(x>=1800 and x<=1999):
    print('1') x>=1800 and x<=1999 x>=1800 x 1800 x<=1999 x 1999 print('1') print '1' x=int(input()) int(input()) x
x=int(input())

if(x>=400 and x<=599):
    print('8')
elif(x>=600 and x<=799):
    print('7')
elif(x>=800 and x<=999):
    print('6')
elif(x>=1000 and x<=1199):
    print('5')
elif(x>=1200 and x<=1399):
    print('4')
elif(x>=1400 and x<=1599):
    print('3')
elif(x>=1600 and x<=1799):
    print('2')
elif(x>=1800 and x<=1999):
    print('1')
